Malicious PDF — malware analysis report

Static analysis result for SHA-256 d2036a01c522cb48…

MALICIOUS

PDF

86.7 KB Created: 2021-07-04 08:28:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-08-25
MD5: 4a5095f50ee063bc47f42c9662e108e0 SHA-1: dc65caf583ee808204609f1e5fe59da1259fc6ea SHA-256: d2036a01c522cb48df8b28354c9e551d3241f1e923ce692f0ec1d93555c90f98
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file contains numerous embedded URLs, many of which point to compromised WordPress sites and disposable hosting. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or malware distribution. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' suggests the document's primary purpose is to act as a link farm, leveraging SEO tactics on potentially compromised or disposable domains.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9952

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://crysiq.ru/uplcv?utm_term=neet+2020+model+question+papers PDF link annotation
    • http://china-baby-clothes.com/d/files/rotivuzemexozerorejeki.pdfIn PDF document text
    • http://timatey.kz/wp-content/plugins/super-forms/uploads/php/files/pmvrdpuuq0bu3m7cv20ek4cb76/fajedum.pdfIn PDF document text
    • https://www.rockandroll.blog.br/wp-content/plugins/super-forms/uploads/php/files/7cfsgdqcm4n89g2dufq8isd4kc/zenuxaranegixirerojenajo.pdfIn PDF document text
    • http://www.sensible-seeds-premium.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609e089d744a1---zidasiroxoza.pdfIn PDF document text
    • https://lightsourceindiana.com/wp-content/plugins/super-forms/uploads/php/files/01421f56f77b50b157c2d3f45716cd8c/91075834171.pdfIn PDF document text
    • https://sketchup360.vn/wp-content/plugins/super-forms/uploads/php/files/88bfmo5dsahg9s3rscpq7k004g/86434656749.pdfIn PDF document text
    • https://oncallanatomist.org/ckfinder/userfiles/files/poxoxekur.pdfIn PDF document text
    • http://allamericannursing.com/userfiles/file/57921678260.pdfIn PDF document text
    • http://vakoplus.cz/klienti/devel/sneznerolby.cz/ckfinder/userfiles/files/8717989886.pdfIn PDF document text
    • http://tubietelbar.hu/uploadfile/57481216589.pdfIn PDF document text
    • https://www.stamfordtaxis.com/wp-content/plugins/super-forms/uploads/php/files/b1o3403nsmvkcnisqgi6ja7sae/55356588193.pdfIn PDF document text
    • https://pavaniautismschools.com/wp-content/plugins/super-forms/uploads/php/files/d1fr1j7lm991p9pvelbiej11ed/55304084530.pdfIn PDF document text
    • http://raffaelecavazzoni.com/userfiles/files/42446430233.pdfIn PDF document text
    • https://elektrona.cz/files/file/totodabupojur.pdfIn PDF document text
    • https://alexandrapanayotou.com/web/images/static/file/20503807289.pdfIn PDF document text
    • https://www.bouldersudbury.org/wp-content/plugins/formcraft/file-upload/server/content/files/160773ac72c9c9---38833818663.pdfIn PDF document text
    • http://www.abcklima.hu//data/editorfile/67355670837.pdfIn PDF document text
    • https://nhachoxebus.com/upload/fck/file/vomivip.pdfIn PDF document text
    • http://tc-antey.ru/uploads/files/20556689606.pdfIn PDF document text
    • http://altaprecision.com/userfiles/file/1865464613.pdfIn PDF document text
    • http://www.ecostroyservis.ru/File/lekonetakabiliwinomuka.pdfIn PDF document text
    • https://webtraffic.ch/wp-content/plugins/super-forms/uploads/php/files/43urgfme66vqnqin3krli2t91m/vuveturisi.pdfIn PDF document text
    • http://www.rlktechniek.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1606cdd3cd5835---dapiwuveditijoxuf.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000eee3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEEE3 11016 bytes
SHA-256: 6f4c6078dd493916cf937569a138209106f1c47d7ee4e75d41a2247e1788bca5
font_01_sfnt_off00010846.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10846 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00012058.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12058 17312 bytes
SHA-256: 767fa3b46961659ee9c6838078fb0781e70ba2c7aa94733c11fe2b2443639812

Open this report in the interactive analyzer, or submit your own file for analysis.